"All righty! Tco signed by the building department. Roaster turns on Saturday. Drinks at the coffee bar not far off," the coffee company tweeted Wednesday.

The roaster has a cult following for blending high end beans and selling them within 48 hours of their roasting. Blue Bottle currently has a cafe in San Francisco and three more kiosks in the City, including in the Ferry Building and in the SF MoMa.